Shell Oil Comapny

Jane Qing Zhang

George Rodenbusch

Heping Zhang

You Sun Li

John Joseph Kenney

Constantine George Caracostis

Stergios Liapis

Benjamin Tai-An Chang

There is disclosed a floating system positioned in a body of water having a water bottom, the system comprising a host member floating in the water; an elongated underwater line structure, comprising a top connected to the host; a bottom extending to the seabed and adapted to connect to a flowline lying on the seabed; a first portion of the line structure being shaped concave upward; a second portion of the line structure being shaped concave upward; and a transition segment between being shaped concave downward, the transition segment located between the first portion and the second portion.

Floating system connected to an underwater line structure and methods of use

A spar platform comprising a deck; a buoyant tank assembly, comprising three spaced buoyant sections connected to the deck; a counterweight; and a counterweight spacing structure connecting the counterweight to the buoyant tank assembly.

Spar structures

Disclosed is a method of either plugging or lining a wellbore or casing using a polymer member into which stored energy or shape memory has been introduced. The shape memory is introduced into the member by reducing its diameter, such as by compressing the member using a rolling mill machine or stretching the member axially. Next, the member is lowered into a desired location in the wellbore or casing and subjected to conditions causing at least partial recovery of the anelastic strain. The conditions causing recovery of the anelastic strain can include heat from the reservoir surrounding the wellbore, heat introduced into the wellbore, solvents, and combinations thereof. Recovery of the anelastic strain causes the member to expand in diameter, thus plugging or lining the wellbore or casing at the desired location.

Methods of using downhole polymer plug

Growing community of inventors

Sugar Land, TX, United States of America

Jane Qing Zhang